Flame retardant optical fiber cable

ABSTRACT

The present disclosure provides a flame retardant optical fiber cable. The flame retardant optical fiber cable includes a plurality of bundle binders. In addition, the flame retardant optical fiber cable includes a first layer, a second layer, a third layer, a fourth layer, a fifth layer, a sixth layer, a seventh layer and an eighth layer. The first layer surrounds a plurality of bundle binders. The second layer surrounds the first layer. The third layer surrounds the second layer. The fourth layer surrounds the third layer. The fifth layer surrounds the fourth layer. The sixth layer surrounds the fifth layer. The seventh layer surrounds the sixth layer. The eighth layer surrounds the seventh layer.

TECHNICAL FIELD

The present disclosure relates to the field of optical fiber cable and,in particular, relates to a flame retardant optical fiber cable. Thepresent application is based on, and claims priority from an IndianApplication Number 201721018968 filed on 30 May 2017 the disclosure ofwhich is hereby incorporated by reference herein.

BACKGROUND

Nowadays, one of the major issues in cable manufacturing industry liesin improving the behavior and the performance of fire resistant cablesunder extreme temperature conditions, and in particular those that areto be encountered during a fire. The fire resistant cables which requirestringent fire performance has to undergo conformance with thecomprehensive references to the one or more safety standards. Presently,the fire resistant cables available have certain drawbacks. Most ofthese fire resistant cables are bulkier in size. In addition, these fireresistant cables are unable to maintain circuit integrity under fireconditions.

In light of the above-stated discussion, there is a need for a fireresistant cable that overcomes the above-stated disadvantages.

SUMMARY

In a first example, the present disclosure provides a flame retardantoptical fiber cable. The flame retardant optical fiber cable includes aplurality of bundle binders. The plurality of bundle binders lyingsubstantially along a longitudinal axis of the flame retardant opticalfiber cable. Further, the flame retardant optical fiber cable includes afirst layer. The first layer surrounds the plurality of bundle binders.Moreover, the flame retardant optical fiber cable includes a secondlayer. The second layer surrounds the first layer. Furthermore, theflame retardant optical fiber cable includes a third layer. The thirdlayer surrounds the second layer. In addition, the flame retardantoptical fiber cable includes a fourth layer. The fourth layer surroundsthe third layer. Also, the flame retardant optical fiber cable includesa fifth layer. The fifth layer surrounds the fourth layer. The flameretardant optical fiber cable includes a sixth layer. The sixth layersurrounds the fifth layer. Further, the flame retardant optical fibercable includes a seventh layer. The seventh layer surrounds the sixthlayer. Moreover, the flame retardant optical fiber cable includes aneighth layer. The eighth layer surrounds the seventh layer. Theplurality of bundle binders includes a plurality of optical fibers. Thefirst layer is a loose tube. The first layer is substantially made ofsteel. The fourth layer is a peripheral strength member. The fifth layeris a first jacket layer. The seventh layer is substantially an armoringlayer. The eighth layer is a second jacket layer.

In a second example, the present disclosure provides a flame retardantoptical fiber cable. The flame retardant optical fiber cable includes aplurality of bundle binders. The plurality of bundle binders lyingsubstantially along a longitudinal axis of the flame retardant opticalfiber cable. Further, the flame retardant optical fiber cable includes afirst layer. The first layer surrounds the plurality of bundle binders.Moreover, the flame retardant optical fiber cable includes a secondlayer. The second layer surrounds the first layer. Furthermore, theflame retardant optical fiber cable includes a third layer. The thirdlayer surrounds the second layer. In addition, the flame retardantoptical fiber cable includes a fourth layer. The fourth layer surroundsthe third layer. Also, the flame retardant optical fiber cable includesa fifth layer. The fifth layer surrounds the fourth layer. The flameretardant optical fiber cable includes a sixth layer. The sixth layersurrounds the fifth layer. Further, the flame retardant optical fibercable includes a seventh layer. The seventh layer surrounds the sixthlayer. Moreover, the flame retardant optical fiber cable includes aneighth layer. The eighth layer surrounds the seventh layer. The flameretardant optical fiber cable includes a plurality of ripcords. Theplurality of bundle binders includes a plurality of optical fibers. Thefirst layer is a loose tube. The first layer is substantially made ofsteel. The fourth layer is a peripheral strength member. The fifth layeris a first jacket layer. The seventh layer is substantially an armoringlayer. The eighth layer is a second jacket layer. The flame retardantoptical fiber cable withstands a temperature of at least 930 degreeCelsius. The plurality of ripcords includes a first plurality ofripcords and a second plurality of ripcords. The first plurality ofripcords is positioned at an interface of the fourth layer and the fifthlayer. The second plurality of ripcords is positioned at an interface ofthe sixth layer and the seventh layer. The optical fiber cable isstressed for a first time period of about 60 minutes with thefacilitation of flame at 930 degree Celsius with mechanical shocks. Theoptical fiber cable is further stressed for a second time period ofabout 60 minutes with the facilitation of water spray on the cable.

In a third example, the present disclosure provides a flame retardantoptical fiber cable. The flame retardant optical fiber cable includes aplurality of bundle binders. The plurality of bundle binders lyingsubstantially along a longitudinal axis of the flame retardant opticalfiber cable. Further, the flame retardant optical fiber cable includes afirst layer. The first layer surrounds the plurality of bundle binders.Moreover, the flame retardant optical fiber cable includes a secondlayer. The second layer surrounds the first layer. Furthermore, theflame retardant optical fiber cable includes a third layer. The thirdlayer surrounds the second layer. In addition, the flame retardantoptical fiber cable includes a fourth layer. The fourth layer surroundsthe third layer. Also, the flame retardant optical fiber cable includesa fifth layer. The fifth layer surrounds the fourth layer. The flameretardant optical fiber cable includes a sixth layer. The sixth layersurrounds the fifth layer. Further, the flame retardant optical fibercable includes a seventh layer. The seventh layer surrounds the sixthlayer. Moreover, the flame retardant optical fiber cable includes aneighth layer. The eighth layer surrounds the seventh layer. The flameretardant optical fiber cable includes a plurality of ripcords. Theplurality of bundle binders includes a plurality of optical fibers. Thefirst layer is a loose tube. The first layer is substantially made ofsteel. The second layer is made of a fire resistance mica tape. Thethird layer is substantially made of water swellable yarns. The fourthlayer is a peripheral strength member. The fourth layer is substantiallymade of glass roving yarns. The fifth layer is a first jacket layer. Thefifth layer is substantially made of low smoke zero halogen material.The sixth layer is substantially made of a mica tape. The seventh layeris substantially an armoring layer. The seventh layer is substantiallymade of a corrugated ECCS tape. The eighth layer is a second jacketlayer. The eighth layer is substantially made of low smoke zero halogenmaterial. The flame retardant optical fiber cable withstands atemperature of at least 930 degree Celsius. The plurality of ripcordsincludes a first plurality of ripcords and a second plurality ofripcords. The first plurality of ripcords is positioned at an interfaceof the fourth layer and the fifth layer. The second plurality ofripcords is positioned at an interface of the sixth layer and theseventh layer. The optical fiber cable is stressed for a first timeperiod of about 60 minutes with the facilitation of flame at 930 degreeCelsius with mechanical shocks. The optical fiber cable is furtherstressed for a second time period of about 60 minutes with thefacilitation of water spray on the cable.

BRIEF DESCRIPTION OF FIGURES

Having thus described the disclosure in general terms, reference willnow be made to the accompanying figures, wherein:

FIG. 1 illustrates a cross sectional view of a flame retardant opticalfiber cable, in accordance with an embodiment of the present disclosure;

It should be noted that the accompanying figures are intended to presentillustrations of exemplary embodiments of the present disclosure. Thesefigures are not intended to limit the scope of the present disclosure.It should also be noted that accompanying figures are not necessarilydrawn to scale.

DETAILED DESCRIPTION

In the following description, for purposes of explanation, numerousspecific details are set forth in order to provide a thoroughunderstanding of the present technology. It will be apparent, however,to one skilled in the art that the present technology can be practicedwithout these specific details. In other instances, structures anddevices are shown in block diagram form only in order to avoid obscuringthe present technology.

Reference in this specification to “one embodiment” or “an embodiment”means that a particular feature, structure, or characteristic describedin connection with the embodiment is included in at least one embodimentof the present technology. The appearance of the phrase “in oneembodiment” in various places in the specification are not necessarilyall referring to the same embodiment, nor are separate or alternativeembodiments mutually exclusive of other embodiments. Moreover, variousfeatures are described which may be exhibited by some embodiments andnot by others. Similarly, various requirements are described which maybe requirements for some embodiments but not other embodiments.

Moreover, although the following description contains manyspecifications for the purposes of illustration, anyone skilled in theart will appreciate that many variations and/or alterations to saiddetails are within the scope of the present technology. Similarly,although many of the features of the present technology are described interms of each other, or in conjunction with each other, one skilled inthe art will appreciate that many of these features can be providedindependently of other features. Accordingly, this description of thepresent technology is set forth without any loss of generality to, andwithout imposing limitations upon, the present technology.

FIG. 1 illustrates a cross sectional view of an optical fiber cable, inaccordance with various embodiments of the present disclosure. Theoptical fiber cable is a flame retardant optical fiber cable 100. Theflame retardant optical fiber cable 100 is used for the high temperatureresistance purpose.

The flame retardant optical fiber cable 100 includes a plurality ofbundle binders 152 a-152 d, a plurality of optical fibers 154 a-154 d, afirst layer 156, a second layer 158, a third layer 160, a fourth layer162. In addition, the flame retardant optical fiber cable 100 includes afifth layer 164, a sixth layer 166, a seventh layer 168, and an eighthlayer 170. Furthermore, the flame retardant optical fiber cable 100includes a plurality of ripcords. The flame retardant optical fibercable 100 is used for carrying light over long distances. Moreover, theflame retardant optical fiber cable 100 may simply be used to transmitoptical signals (which may carry sensor data or communication data).Generally, the optical fiber present inside the cable is responsible forcarrying light signals over long distances.

The flame retardant optical fiber cable 100 includes the plurality ofbundle binders 152 a-152 d. In general, the bundle binder is a cover ofthe bunch of the plurality of optical fibers. Further, each of theplurality of bundle binders 152 a-152 d facilitates in distinguishes thebunch of the plurality of optical fibers 154 a-154 d inside the loosetube during installation. In addition, each of the plurality of bundlebinders 152 a-152 d placed around the plurality of optical fibers 154a-154 d to form an optical fiber bundle. In an embodiment of the presentdisclosure, each of the plurality of bundle binders 152 a-152 d is madeof a polyester based material. In another embodiment of the presentdisclosure, the material of the plurality of bundle binders 152 a-152 dincludes but may not be limited to poly-amide, polyethyleneterephthalate and the like. Moreover, each of the plurality of bundlebinders 152 a-152 d is used for encapsulating the plurality of opticalfibers 154 a-154 d. Also, each of the plurality of bundle binders 152a-152 d is used inside the loose tube for the identification of fibers.

In an embodiment of the present disclosure, the flame retardant opticalfiber cable 100 includes four different colored bundle binders. Each ofthe plurality of bundle binders 152 a-152 d may be of any other color.In an example, the color of each of the plurality of bundle binders 152a-152 d is selected from the group. The group includes blue, orange,green, brown and red color. In an example, the color of each of theplurality of bundle binders 152 a-152 d is selected from any otherrespective color as per requirement. In another embodiment of thepresent disclosure, the flame retardant optical fiber cable 100 mayinclude any number of bundle binders. The plurality of bundle binders152 a-152 d encloses the plurality of optical fibers 154 a-154 d. In anembodiment of the present disclosure, the bundle binder 152 a enclosesthe plurality of optical fibers 154 a. In addition, the bundle binder152 b encloses the plurality of optical fibers 154 b. Further, thebundle binder 152 c encloses the plurality of optical fibers 154 c.Furthermore, the bundle binder 152 d encloses the plurality of opticalfibers 154 d. Each of the plurality of bundle binders 152 a-152 d isused for encapsulating the plurality of optical fibers. The plurality ofbundle binders 152 a-152 d facilitates in distinguishes the bunch of theplurality of optical fibers 154 a-154 d during installation. In anotherembodiment of the present disclosure, the flame retardant optical fibercable 100 may include any number of bundle binders. In yet anotherembodiment of the present disclosure, the flame retardant optical fibercable 100 does not include any bundle binder. In an embodiment of thepresent disclosure, each of the plurality of bundle binders 152 a-152 dencloses 12 colored optical fibers. The total number of optical fiberspresent in the flame retardant optical fiber cable is 48 (4*12=48), whenthe number of bundle binders is four. In another embodiment of thepresent disclosure, each of the plurality of bundle binders 152 a-152 dmay include any number of optical fibers.

The flame retardant optical fiber cable 100 includes the plurality ofoptical fibers 154 a-154 d enclosed inside the plurality of bundlebinders 152 a-152 d. Each of the plurality of optical fibers 154 a-154 dis a fiber used for transmitting information as light pulses from oneend to another. In addition, each of the plurality of optical fibers 154a-154 d is a thin strand of glass capable of transmitting opticalsignals. Also, each of the plurality of optical fibers 154 a-154 d isconfigured to transmit large amounts of information over long distanceswith relatively low attenuation. Further, each of the plurality ofoptical fibers 154 a-154 d includes a core region and a cladding region.The core region is an inner part of an optical fiber and the claddingsection is an outer part of the optical fiber.

In an embodiment of the present disclosure, each of the plurality ofoptical fibers 154 a-154 d is a colored optical fiber. The color of eachof the plurality of optical fibers 154 a-154 d is selected from thegroup. The group includes blue, orange, green, brown, slate, white, red,black, yellow, violet, pink and aqua. In another embodiment of thepresent disclosure, the optical fiber may be of any different color. Thecoloring is done for identification of each of the plurality of opticalfibers 154 a-154 d. In an embodiment of the present disclosure, ringmarking or different colors bundle binder grouping is used for theidentification of optical fibers when the number of optical fiber ismore than 12 fibers.

Each of the plurality of optical fibers 154 a-154 d is a single modeoptical fiber. In an embodiment of the present disclosure, each of theplurality of optical fibers 154 a-154 d has a maximum attenuation ofabout 0.36 dB per kilometer at a wavelength of 1310 nanometers. Inanother embodiment of the present disclosure, each of the plurality ofoptical fibers 154 a-154 d has a maximum attenuation of about 0.22 dBper kilometer at a wavelength of 1550 nanometer. The attenuation of eachof the plurality of optical fibers 154 a-154 d corresponds to a loss inoptical power as the light travels through the plurality of fibers 154a-154 d.

In an embodiment of the present disclosure, each of the plurality ofoptical fibers 154 a-154 d has a polarization mode dispersion of lessthan or equal to 0.2 ps √km The polarization mode dispersion correspondsto spreading of optical signals when the two different polarizations oflight in a waveguide travel at different speeds.

The flame retardant optical fiber cable 100 includes the first layer156.

The first layer 156 encloses the plurality of bundle binders 152 a-152 dand the plurality of optical fibers 154 a-154 d. In an embodiment of thepresent disclosure, the first layer 156 is a loose tube. In general, theloose tube is circular in shape and hollow from inside. Further, theloose tube is a tube that encloses optical fibers in a loose tubesheath. The loose tube sheath protects the optical fibers from physicaldamage. The loose tube sheath protects the optical fibers from any kindof force applied on the cable. In an embodiment of the presentdisclosure, the loose tube is a metallic loose tube. In addition, theloose tube is substantially made of steel. The steel tube has excellentmechanical performance with high tensile properties. In anotherembodiment of the present disclosure, the first layer 156 is made of anyother material. The first layer 156 provides protection to the pluralityof bundle binders 152 a-152 d and the plurality of optical fibers 154a-154 d. In addition, the first layer 156 has very good mechanicalproperties without diminished safety and reliability.

The flame retardant optical fiber cable 100 includes the second layer158. The second layer 158 surrounds the first layer 156. The secondlayer 158 is made of a fire resistance tape. In an embodiment of thepresent disclosure, the fire resistance tape is substantially a micatape. In an embodiment of the present disclosure, the two layers of themica tape with at least 15 percent overlap is helically wounded on theloose tube. The mica is a poor conductor of heat and includes hightemperature resistant properties. The fire resistance tape is used toincrease the fire resistance of the flame retardant optical fiber cable100. In addition, the fire resistance tape is used to protect the flameretardant optical fiber cable 100 with respect to the flame.Furthermore, the fire resistance mica tape enhances the insulationeffect.

The flame retardant optical fiber cable 100 includes the third layer160. The third layer 160 surrounds the second layer 158. The third layer160 is substantially made of water blocking elements. In an embodimentof the present disclosure, the water blocking elements are waterswellable yarns. The water swellable yarns prevent the ingression ofwater in the core of the flame retardant optical fiber cable 100.

The flame retardant optical fiber cable 100 includes the fourth layer162. The fourth layer 162 surrounds the third layer 160. The fourthlayer 162 is a peripheral strength member. In an embodiment of thepresent disclosure, the peripheral strength member is substantially aglass roving yarn. The one full coverage layer of glass roving yarn isplaced helically in clockwise direction on the third layer 160. Anotherfull coverage layer of glass roving yarn is placed in anti-clockwisedirection on the third layer 160. In addition, the fourth layer 162protects the core of the flame retardant optical fiber cable 100 againstthe crush resistance. Furthermore, the fourth layer 162 provides tensilestrength along the length of the flame retardant optical fiber cable100. Generally, the tensile strength is the ability of a material towithstand a force. In more general sense, tensile strength of thematerial is the maximum amount of tensile stress that it can take beforefailure.

The flame retardant optical fiber cable 100 includes the fifth layer164. The fifth layer 164 surrounds the fourth layer 162. In anembodiment of the present disclosure, the fifth layer 164 is a firstjacket. The first jacket represents the inner jacket of the flameretardant optical fiber cable 100. The first jacket is substantiallymade of UV proof LSZH (low smoke zero halogen) material. In addition,the first jacket is black in color. In an embodiment of the presentdisclosure, the Low smoke zero halogen or low smoke free of halogen is amaterial classification composed of thermoplastic or thermosetcompounds. The low smoke zero halogen materials emit limited smoke andno halogen when exposed to high sources of heat. Further, the jacketingof the low smoke zero halogen material reduces the amount and density ofthe smoke and increases the safety during fire. The fifth layer 164provides the protection to the flame retardant optical fiber cable 100.Further, the fifth layer 164 provides good barrier and flame retardantcharacteristic to the flame retardant optical fiber cable 100. Moreover,the fifth layer 164 helps in the mechanical performance of the flameretardant optical fiber cable 100.

The flame retardant optical fiber cable 100 includes the sixth layer166. The sixth layer 166 surrounds the fifth layer 164. The sixth layer166 is substantially made of the fire resistance tape. In an embodimentof the present disclosure, the fire resistance tape is the mica tape (asdescribed above). In an embodiment of the present disclosure, the twolayers of the mica tape with at least 15 percent overlap is helicallywounded on the fifth layer 164. In another embodiment of the presentdisclosure, the fire resistance tape may be any type of tape.

The flame retardant optical fiber cable 100 includes the seventh layer168. The seventh layer 168 encloses the sixth layer 166. In anembodiment of the present disclosure, the seventh layer 168 is anarmored layer. The armored layer is substantially made of corrugatedECCS tape. The corrugated ECCS tape is used to limit the signalattenuation during fire. In an embodiment of the present disclosure, thecorrugated steel tape having thickness of about 0.145±0.025 millimeterand is coated with co-polymer having thickness of about 0.04±0.01millimeter to improve the performance of the armoring layer. Thestandard for corrugation of tape is ˜2.5 mm pitch and ˜0.6 mm height inoptical fiber cable industry. Further, the seventh layer 168 providescrush resistance and tensile resistance to the flame retardant opticalfiber cable 100.

The flame retardant optical fiber cable 100 includes the eighth layer170. The eighth layer 170 surrounds the seventh layer 168. In anembodiment of the present disclosure, the eighth layer 170 is a secondjacket. The second jacket is substantially made of UV Proof LSZH (lowsmoke zero halogen) material. The second jacket is black in color. Theeighth layer 170 provides the protection to the flame retardant opticalfiber cable 100. In addition, the eighth layer 170 improves themechanical performance of the flame retardant optical fiber cable 100.

The flame retardant optical fiber cable 100 includes the plurality ofripcords lying substantially along the longitudinal axis 150 of theflame retardant optical fiber cable 100. In addition, the longitudinalaxis 150 of the flame retardant optical fiber cable 100 is an axis alongthe length of the cable. Further, the longitudinal axis 150 is animaginary axis passing through the geometrical center 151 of the opticalfiber cable 100. In an embodiment of the present disclosure, the numberof ripcords present in the flame retardant optical fiber cable 100 isfour. The plurality of ripcords includes a first plurality of ripcords172 a-172 b and a second plurality of ripcords 172 c-172 d. In anembodiment of the present disclosure, the first plurality of ripcords162 a-172 b includes 2 diagonally opposite ripcords. The first pluralityof ripcords 172 a-172 b is positioned at an interface of the fourthlayer 162 and the fifth layer 164. In an embodiment of the presentdisclosure, the second plurality of ripcords 172 a-172 b includes 2diagonally opposite ripcords. The second plurality of ripcords 172 c-172d is positioned at an interface of the sixth layer 166 and the seventhlayer 168. In addition, each of the first plurality of ripcords 172a-172 b and the second plurality of ripcords 172 c-172 d is made ofpolyester based twisted yarns. Further, the first plurality of ripcords172 a-172 b facilitates easy stripping of the fifth layer 164 and thesecond plurality of ripcords 172 c-172 d facilitates easy stripping ofthe seventh layer 168 and the eighth layer 170. In another embodiment ofthe present disclosure, the number of ripcords present in the flameretardant optical fiber cable 100 may vary.

The flame retardant optical fiber cable 100 includes a filling gel (notshown in figure). The filling gel is filled inside a core of the flameretardant optical fiber cable 100 and around the plurality of opticalfibers 154 a-154 d. In addition, the core is a central region of theflame retardant optical fiber cable 100. In an example, the centralregion is the region below the first layer 156 and towards the center ofthe flame retardant optical fiber cable 100. In an embodiment of thepresent disclosure, the filling gel is a thixotropic gel. Thethixotropic gel is a viscous fluid or gel under static conditions andflow when shaken or agitated. The thixotropic gel prevents theingression of water inside the core of the flame retardant optical fibercable 100.

In an embodiment of the present disclosure, the flame retardant opticalfiber cable 100 with the loose tube and multilayer improves thewaterproof, fireproof, rodent and other functions. Further, each layerof the multilayer flame retardant optical fiber cable 100 includesspecific materials or material properties that prevents the cable fromburning at high temperatures and reduces economic losses. In addition,the flame retardant optical fiber cable 100 improves the safety and lifeof the cable. Furthermore, the flame retardant optical fiber cable 100withstands temperature of at least 930 degree Celsius. As, each layer ofthe multilayer flame retardant optical fiber cable 100 include specificmaterials that prevents cable to withstand temperature of at least 930degree Celsius. In an example, the mica is a poor conductor of heat andincludes high temperature resistant properties. Also, the fireresistance tape is used to increase the fire resistance of the flameretardant optical fiber cable 100. Moreover, the flame retardant opticalfiber cable 100 has good flame retardant properties. Also, the flameretardant optical fiber cable 100 is suitable for indoor and outdoorenvironments. The flame retardant optical fiber cable 100 is stressedfor a first time period of about 60 minutes with the facilitation offlame at 930 degree Celsius with the mechanical shocks. In addition, theflame retardant optical fiber cable 100 is further stressed for a secondtime period of about 60 minutes with the facilitation of water spray onthe cable. Moreover, the thickness of each layer facilitates the flameretardant optical fiber cable 100 to withstand with fire and water spraytest.

In an embodiment of the present disclosure, flame retardant opticalfiber cable 100 is flexible and easy to handle and install. In addition,the flame retardant optical fiber cable 100 is UV protected. In anembodiment of the present disclosure, the flame retardant optical fibercable 100 is handled using one or more elements. The one or moreelements include a plurality of tools. In an embodiment of the presentdisclosure, the plurality of tools include a fiber stripping tool, wirestripping tool, scissors, sheath knife, snips, sheath removal tool,round cutter, linesmen pliers, needle nose pliers.

In an embodiment of the present disclosure, the flame retardant opticalfiber cable 100 includes 12 optical fibers. In an embodiment, the firstlayer 156 has a first diameter in a range of about 1.6±0 3 mm and asecond diameter in range of about 2.0±0.3 mm for 12 optical fibers. Thefirst diameter represents the inner diameter and the second diameterrepresents the outer diameter. In an embodiment, the first layer 156 hasa thickness in a range of about 0.20±0.05 mm for 12 optical fibers. Thesecond layer 158 includes two layers of tape with minimum 15% overlap.In an embodiment, the second layer 158 has a thickness in a range of0.13±0.02 mm for 12 optical fibers. In an embodiment, the fourth layer162 has one full coverage layer helically clockwise and other fullcoverage layer anti-clockwise. In an embodiment, the fifth layer 164 hasa first diameter in a range of about 7.0±0 3 mm and a second diameter ina range of about 10.0±0.3 mm for 12 optical fibers. In addition, thefifth layer 164 has a thickness in a range of about 1.5±0.3 mm for 12optical fibers. In an embodiment, the low smoke zero halogen material ofthe fifth layer 164 has density of about 1.48±0.04 g/cm3. In anembodiment, the low smoke zero halogen material of the fifth layer 164has limiting oxygen index of 38%. In an embodiment, the low smoke zerohalogen material of the fifth layer 164 has halogen content of 0%. In anembodiment, the low smoke zero halogen material of the fifth layer 164has melt flow index of 5 g/10. In an embodiment, the low smoke zerohalogen material of the fifth layer 164 has tensile strength of 15 MPaminimum. In an embodiment, the low smoke zero halogen material of thefifth layer 164 has elongation of about 150±10%. In an embodiment, thesixth layer 166 includes two layers of tape with minimum 15% overlap. Inan embodiment, the sixth layer 166 has a thickness in a range of about0.13±0.02 mm for 12 optical fibers. In an embodiment, the seventh layer168 has a thickness in a range of about 0.145±0.025 mm with co-polymercoating of 0.04±0.01 mm on either side of steel tape. In an embodiment,the eighth layer 170 has a first diameter in a range of about 12.0±1.0mm and a second diameter in a range of about 16.0±1.0 mm for 12 opticalfibers. In addition, the eighth layer 170 has a thickness in a range ofabout 2.0±0.3 mm for 12 optical fibers. In an embodiment, the low smokezero halogen material of the eighth layer 170 has density of about1.48±0.04 g/cm3. In an embodiment, the low smoke zero halogen materialof the eighth layer 170 has limiting oxygen index of 38%. In anembodiment, the low smoke zero halogen material of the eighth layer 170has halogen content of 0%. In an embodiment, the low smoke zero halogenmaterial of the eighth layer 170 has melt flow index of 5 g/10. In anembodiment, the low smoke zero halogen material of the eighth layer 170has tensile strength of about 15 MPa minimum. In an embodiment, the lowsmoke zero halogen material of the eighth layer 170 has elongation ofabout 150±10%. In an embodiment, the flame retardant optical fiber cable100 has a diameter in a range of about 16.0±1.0 mm for 12 opticalfibers. In an embodiment, the flame retardant optical fiber cable 100has a weight of about 300±10% for 12 optical fibers. In an embodiment,the flame retardant optical fiber cable 100 is compliant with IEC60332-1, IEC 60332-2, IEC 60332-3, EN 50267 (Replaced by IEC 60754-led2.0), EN 50268 (Replaced By EN 61034-1:2005), Sheath Integrity Test IEC60331-25 (750□C @ 90 min), EN 50265 2.1 (Equivalent to 60332-1), BSEN50200 PH120, FT4/IEEE1202 (cable char height, total smoke), UL1685(peak smoke release) and BS 8434-2 2003+A2:2009.

In an embodiment of the present disclosure, the optical fiber cable 100includes 24 optical fibers. In an embodiment, the first layer 156 has afirst diameter in a range of about 1.6±0.3 mm and a second diameter inrange of about 2.0±0.3 mm for 24 optical fibers. In an embodiment, thefirst layer 156 has a thickness in a range of about 0.20±0.05 mm for 24optical fibers. The second layer 158 includes two layers of tape withminimum 15% overlap. In an embodiment, the second layer 158 has athickness in a range of about 0.13±0.02 mm for 24 optical fibers. In anembodiment, the fourth layer 162 has one full coverage layer helicallyclockwise and other full coverage layer anti-clockwise. In anembodiment, the fifth layer 164 has a first diameter in a range of about7.0±0.3 mm and a second diameter in a range of about 10.0±0.3 mm for 24optical fibers. In addition, the fifth layer 164 has a thickness in arange of about 1.5±0.3 mm for 24 optical fibers. In an embodiment, thelow smoke zero halogen material of the fifth layer 164 has density ofabout 1.48±0.04 g/cm3. In an embodiment, the low smoke zero halogenmaterial of the fifth layer 164 has limiting oxygen index of 38%. In anembodiment, the low smoke zero halogen material of the fifth layer 164has halogen content of 0%. In an embodiment, the low smoke zero halogenmaterial of the fifth layer 164 has melt flow index of 5 g/10. In anembodiment, the low smoke zero halogen material of the fifth layer 164has tensile strength of about 15 MPa minimum. In an embodiment, the lowsmoke zero halogen material of the fifth layer 164 has elongation of150±10%. In an embodiment, the sixth layer 166 includes two layers oftape with minimum 15% overlap. In an embodiment, the sixth layer 166 hasa thickness in a range of about 0.13±0.02 mm for 24 optical fibers. Inan embodiment, the seventh layer 168 has a thickness in a range of about0.145±0.025 mm with co-polymer coating of about 0.04±0.01 mm on eitherside of steel tape. In an embodiment, the eighth layer 170 has a firstdiameter in a range of about 12.0±1 0 mm and a second diameter in arange of about 16.0±1.0 mm for 24 optical fibers. In addition, theeighth layer 170 has a thickness in a range of about 2.0±0.3 mm for 24optical fibers. In an embodiment, the low smoke zero halogen material ofthe eighth layer 170 has density of about 1.48±0.04 g/cm3. In anembodiment, the low smoke zero halogen material of the eighth layer 170has limiting oxygen index of 38%. In an embodiment, the low smoke zerohalogen material of the eighth layer 170 has halogen content of 0%. Inan embodiment, the low smoke zero halogen material of the eighth layer170 has melt flow index of 5 g/10. In an embodiment, the low smoke zerohalogen material of the eighth layer 170 has tensile strength of about15 MPa minimum. In an embodiment, the low smoke zero halogen material ofthe eighth layer 170 has elongation of 150±10%. In an embodiment, theflame retardant optical fiber cable 100 has a diameter in a range ofabout 16.0±1.0 mm for 24 optical fibers. In an embodiment, the flameretardant optical fiber cable 100 has a weight of about 300±10% for 24optical fibers. In an embodiment, the flame retardant optical fibercable 100 is compliant with IEC 60332-1, IEC 60332-2, IEC 60332-3, EN50267 (Replaced by IEC 60754-led 2.0), EN 50268 (Replaced By EN61034-1:2005), Sheath Integrity Test IEC 60331-25 (750□C @ 90 min.), EN50265 2.1 (Equivalent to 60332-1), BS EN50200 PH120, FT4/IEEE1202 (cablechar height, total smoke), UL1685 (peak smoke release) and BS 8434-22003+A2:2009.

In yet another embodiment of the present disclosure, the flame retardantoptical fiber cable 100 includes 48 optical fibers. In an embodiment,the first layer 156 has a first diameter in a range of about 3.6±0 5 mmand a second diameter in a range of about 4.0±0.5 mm for 48 opticalfibers. The first diameter is the inner diameter and the second diameteris the outer diameter of the flame retardant optical fiber cable 100. Inan embodiment, the first layer 156 has a thickness in a range of about0.20±0.05 mm for 48 optical fibers. The second layer 158 includes twolayers of tape with minimum 15% overlap. In an embodiment, the secondlayer 158 has a thickness in a range of about 0.13±0.02 mm for 48optical fibers. In an embodiment, the fourth layer 162 has one fullcoverage layer helically clockwise and other full coverage layeranti-clockwise. In an embodiment, the fifth layer 164 has a firstdiameter in a range of about 7.7±0 3 mm and a second diameter in a rangeof about 10.7±0.3 mm for 48 optical fibers. In addition, the fifth layer164 has a thickness in a range of about 1.5±0.3 mm for 48 opticalfibers. In an embodiment, the low smoke zero halogen material of thefifth layer 164 has density of about 1.48±0.04 g/cm3. In an embodiment,the low smoke zero halogen material of the fifth layer 164 has limitingoxygen index of 38%. In an embodiment, the low smoke zero halogenmaterial of the fifth layer 164 has halogen content of 0%. In anembodiment, the low smoke zero halogen material of the fifth layer 164has melt flow index of 5 g/10. In an embodiment, the low smoke zerohalogen material of the fifth layer 164 has tensile strength of 15 MPaminimum. In an embodiment, the low smoke zero halogen material of thefifth layer 164 has elongation of about 150±10%. In an embodiment, thesixth layer 166 includes two layers of tape with minimum 15% overlap. Inan embodiment, the sixth layer 166 has a thickness in a range of about0.13±0.02 mm for 48 optical fibers. In an embodiment, the seventh layer168 has a thickness in a range of about 0.145±0.025 mm with co-polymercoating of 0.04±0.01 mm on either side of steel tape. In an embodiment,the eighth layer 170 has a first diameter in a range of about 13.0±0 3mm and a second diameter in a range of about 17.0±1.0 mm for 48 opticalfibers. In addition, the eighth layer 170 has a thickness in a range ofabout 2.0±0.3 mm for 48 optical fibers. In an embodiment, the low smokezero halogen material of the eighth layer 170 has density of about1.48±0.04 g/cm3. In an embodiment, the low smoke zero halogen materialof the eighth layer 170 has limiting oxygen index of 38%. In anembodiment, the low smoke zero halogen material of the eighth layer 170has halogen content of 0%. In an embodiment, the low smoke zero halogenmaterial of the eighth layer 170 has melt flow index of 5 g/10. In anembodiment, the low smoke zero halogen material of the eighth layer 170has tensile strength of 15 MPa minimum. In an embodiment, the low smokezero halogen material of the eighth layer 170 has elongation of about150±10%. In an embodiment, the optical fiber cable 100 has a diameter ina range of about 17.0±1.0 millimeters for 48 optical fibers. In anembodiment, the flame retardant optical fiber cable 100 has a weight ofabout 345±10% for 48 optical fibers. In an embodiment, the flameretardant optical fiber cable 100 is compliant with IEC 60332-1, IEC60332-2, IEC 60332-3, EN 50267 (Replaced by IEC 60754-led 2.0), EN 50268(Replaced By EN 61034-1:2005), Sheath Integrity Test IEC 60331-25 (750□C@ 90 min.), EN 50265 2.1 (Equivalent to 60332-1), BS EN50200 PH120,FT4/IEEE1202 (cable char height, total smoke), UL1685 (peak smokerelease) and BS 8434-2 2003+A2:2009.

In yet another embodiment of the present disclosure, the flame retardantoptical fiber cable 100 may include any number of optical fibers. Thefirst layer, second layer, third layer, fourth layer, fifth layer, sixthlayer, seventh layer and eighth layer may have different dimensions formultiple fiber counts. In an embodiment, ring marking or different colorbundle binder grouping may be used for identification in case of morethan 12 optical fibers.

In an embodiment of the present disclosure, the flame retardant opticalfiber cable 100 has a crush resistance of about 4000 Newton/10centimeters. Crush resistance determines the ability of the flameretardant optical-fiber cable 100 to withstand and/or recover from theeffects of compressive forces. In an embodiment of the presentdisclosure, the flame retardant optical fiber cable 100 has a maximumtensile strength of about 3000 Newton. In an embodiment of the presentdisclosure, the flame retardant optical fiber cable 100 has impactstrength of about 25 Newton meter. The impact strength is the ability ofthe flame retardant optical fiber cable 100 to absorb shock and impactenergy without breaking. In an embodiment of the present disclosure, theflame retardant optical fiber cable 100 has repeated bend radius ofabout 20 D when it is tested for about 20 cycles. In an embodiment ofthe present disclosure, the flame retardant optical fiber cable 100 hastorsion of ±180 degree. In an embodiment of the present disclosure, theflame retardant optical fiber cable 100 has a kink radius of about 10 D,where D is the cable diameter of the flame retardant optical fiber cable100. The kink radius corresponds to the minimum radius of the flameretardant optical fiber cable 100 to bend without kinking or damagingthe flame retardant optical fiber cable 100. In addition, the kinkradius is the minimum radius at which the flame retardant optical fibercable 100 bends without affecting the life of the cable. Further, theminimum kink radius provides more flexibility to the flame retardantoptical fiber cable 100. Moreover, the kink radius is the minimum loopradius at the onset of kinking of the flame retardant optical fibercable 100. Furthermore, the kink radius is the minimum radius whichallows looping or bending of each of the plurality of optical fibers 154a-154 d in each bundle binder of the plurality of bundle binders 152a-152 d without sustaining any damage.

The flame retardant optical fiber cable has numerous advantages over theprior art. The flame retardant optical fiber cable 100 has a longservice life. In addition, the temperature resistance of the flameretardant optical fiber cable 100 lies in between −40 degree Celsius and70 degree Celsius. Moreover, the optimized dimensions of sub parts ofthe flame retardant optical fiber cable 100 reduce the size of cable.Furthermore, the flame retardant optical fiber cable 100 has very goodmechanical properties without diminished safety and reliability. Also,the flame retardant optical fiber cable 100 maintains circuit integrityunder fire conditions and provides security for the transmission of dataover long distances.

The present disclosure includes a multiple steps for the preparation andhandling of the flame retardant optical fiber cable 100.

The first step includes of consulting the work instructions to determinethe position of end preparation of the flame retardant optical fibercable 100.

The second step includes of cutting of at least one meter cable from theend of each of the flame retardant optical fiber cable 100 afterplacement to avoid any problem that may have occurred during cableplacement.

The third step includes to determine how much of the cable jacket needsto be removed from the cable to make the end preparation for splice.When no length is recommended, the one meter of cable jacket is removedfrom the cable end to make splice. In addition, the third step includesof placing a tape marker or pen mark on the cable jacket at therecommended distance for end of cable sheath removal.

The fourth step includes of placing a wrap of tape around the cablesheath at the specified distance from the end of the cable correspondingto the sheath length to be removed. This is done to fit the spliceclosure being used which is recommended by the closure manufacturer.Furthermore, one meter length is used when no length is specified orrecommended.

The fifth step includes of cutting the end portion of the cable jacketand corrugated steel tape with the help of rotating sheath cutter orhooked knife. In an embodiment of the present disclosure, the ring cutfor removing jacket and steel tape is approximately from 10 to 15 cmfrom its end.

The sixth step includes of grasping the cable jacket on either side ofthe cut and flexes the jacket of the cable. The cable jacket will openalong the ring cut. In addition, the sixth step includes of pulling offthe end 10 to 15 cm of cable jacket from the cable core. Moreover, thesixth step includes of exposing the ripcords that are located under thecable jacket.

The seventh step includes of removing each mating cable jacket to themarking tape using the rip-cords that is accessed from the 10 to 15 cmportion of the jacket. In addition, the seventh step includes of placinga notch in the plastic cable jacket for the rip-cord to follow as it ispulled back along the cable jacket. Further, the seventh step includesof pulling the rip-cord until the end marker is reached for the endsheath removal. Moreover, if a second rip-cord is present, it is used totear a second slit in the jacket 180 degree opposite to the first.

The eighth step includes of removing last 15 cm of cable sheath from thecable-core with a pulling action. In addition, the eighth step includesof cutting the binding yarns over the mica tape using splicer shears orknife. Moreover, the eighth step includes of removing the mica tape fromfirst LSZH jacket. Furthermore, the eighth step includes of cutting theend portion of the cable LSZH jacket. After ring cutting the LSZHjacket, grasp the cable jacket on either side of the cut and flex thejacket of the cable. This will allow the cable jacket to open along thering cut.

The ninth step includes removing the inner cable jacket up to themarking (approximately 1 meter into the cable) using the rip-cordsaccessed from the 10 to 15 cm portion of the jacket. In addition, theninth step includes of placing a notch in the plastic cable jacket forthe rip-cord to follow as it is pulled back along the cable jacket. Asthe rip-cord is pulled, it tears its way through the inner jacket.Continue pulling of the rip-cord until the end marker is reached, resultin end sheath removal. Moreover, if the second rip-cord is present, useit to tear a second slit in the jacket 180 degree opposite the first.

The tenth step includes of removing the peripheral strength yarns fromthe core and get access to the binder yarns. In addition, the tenth stepfurther includes of cutting the binding yarns over the mica tape usingsplicer shears or knife. It also includes removal of the mica tape fromsteel tube to access the steel tube for end preparation.

The eleventh step includes cutting the steel tube for accessing opticalfibers. In addition, it also includes a step to check the tool'sperformance on a small section of the buffer tube. A properly adjustedtool will score the buffer tube without completely cutting through thetube. When the tube is gently flexed it will break along the score.

The twelfth step includes of cutting the bundle binders over the fiberto access the plurality of fibers in end access splices in mostapplications. In addition, the color coding of bundle binder helps todetermine the tubes containing the fibers to be spliced and those to bedropped off.

The thirteenth step includes of locating any spacer buffer tubes filledwith non-optical quality fiber or filler elements. In addition, thespacer buffer tube or fillers is being cut using a cable cutter orsplicer's shears.

The fourteenth step includes of cleaning the gel or water blockingmaterial from the steel tube using lint-free, wipers and an approved gelcleaning agent until the cable core us free of gel or water blockingmaterial.

The flame retardant optical fiber cable 100 is aimed to not only protectagainst, flame propagation, drip and toxicity to protect people trapped,but also to protect internally the fibers. The protection of fibers isnecessary to maintain the signal integrity and to keep signs, firedoors, cctv operational for as long as possible to ensure routes arevisible and accessible in the event of fire.

In an embodiment of the present disclosure, the flame retardant opticalfiber cable 100 includes one or more fire rating requirements.

The first fire rating requirement includes BS EN 50200 corresponds to amethod of test for resistance to fire of unprotected small cables foruse in emergency circuits. This is a test for small cables (it definesup to and including 20 mm diameter) with a flame temperature of 850° C.and a physical impact. This impact is a steel bar striking thepredefined backboard the cable is mounted on at intervals for theduration of the test. The test durations are 15, 30, 60, 90 or 120minutes with cable integrity for defined classifications of PH15, PH30,PH60, PH90 or PH120.

In addition, when the 2006 BS EN was reviewed it was revised to includeBS 8434-1 test which was significant. The 2000 version had testingelements of flame and indirect shock only and this was insufficient tomeet the requirements of BS 5839-1: 2002 ‘standard’ fire resistingcables because there was no water test. This meant that the mostcommonly needed fire resistant cable had to meet the requirements of twotests in two British Standards. The 2006 review was revised toincorporate the water spray element of BS 8434-1 into it is Annex ‘E’.This has meant that ‘standard’ fire resisting cables required by BS5839-1 must achieve PH30 AND Annex ‘E’ of BS EN 50200:2006. So, twotests now within the same standard. For emergency escape lightingsystems described by BS 5266-1 ‘standard’ fire resisting cables arerequired to achieve PH60 classification and Annex E. This is still aregular discussion point: ‘standard’ fire resisting cables must pass twofire tests ‘Annex E’ and PH30/PH60.

The second fire rating requirement includes BS 8434-2:2003+A2:2009corresponds to a method of test for assessment of the fire integrity ofelectric cables. This is a test for unprotected small cables for use inemergency circuits. It includes BS EN 50200 with a 930° C. flame andwith water spray. This test method is used to assess a cable for‘enhanced’ fire resistance required for applications in fire detection,fire alarm, emergency escape lighting and some life safety andfirefighting control circuits. In addition, it is for small cables butat a higher nominal flame temperature, 930° C. as opposed to 850° C. BS8434-2 is a two hour test which includes direct flame, indirect impactand a water spray test. Cables that are required for ‘enhanced’ fireresisting circuits must meet BS EN 50200 PH120 classification and theymust also meet BS 8434-2. The cable is stressed by the flame at 930° C.with mechanical shocks for 60 minutes and further 60 minutes with theaddition of water spray. This fire test is for the additionalperformance required by ‘enhanced’ fire resisting cables and is theprocedure used by the fire test engineer. Furthermore, the second testincludes passing criteria of maximum circuit continuity 2 hours underone or more conditions. The one or more conditions include a worst caseof fire load at 930 degree Celsius, water and shock and the like.

The third fire rating requirement includes BS EN 50582:2016 correspondsto a procedure to assess the circuit integrity of optical fibers in acable under resistance to fire testing. It further includes twodifferent methods of performing the continuity of optical signal supply.The first method includes the monitoring of individual fibers forattenuation change. The second method includes loop-back measurements.Moreover, the third fire rating requirements describes the cable testprocedure referring EN 50200 or in EN 50577. It also includes testequipment, sample preparation, test procedure, optical measurementsduring fire and duration of survival and the test report requirementsfor flame retardant optical fiber cables 100.

Design and installation of flame retardant optical fiber cables 100 forcritical circuits will result in a long term commercial viability of thenetwork, future proof benefits for the network, its investors and itsconsumers. It is essential to protect equipment and minimize the risk ofloss of circuit integrity that could potentially harm personnel,property or equipment and will be a truly nation building project.

The flame retardant optical fiber cable 100 is used for indoor andoutdoor purposes. In an example, the flame retardant optical fiber cable100 may be used in traffic areas, wind farm developments, pipelines, oiland gas fields, heavy industrial sites.

Further, it may be noted that in FIG. 1, the flame retardant opticalfiber cable 100 includes four bundle binder; however, those skilled inthe art would appreciate that more or less number of bundle binder areincluded in the flame retardant optical fiber cable 100.

The significance of the above disclosed optical fiber cable 100 is itsoverall structure. The optical fiber cable 100 disclosed above is flameretardant optical fiber cable 100 due to the arrangement of each layerand the material with which each layer is made. The overall structureand design of the above disclosed flame retardant optical fiber cable100 allows it to withstand a temperature of about 930 degrees Celsius.Further, the flame retardant optical fiber cable 100 has betterperformance as per the BS 8434-2:2003+A2:2009 standards.

The foregoing descriptions of specific embodiments of the presenttechnology have been presented for purposes of illustration anddescription. They are not intended to be exhaustive or to limit thepresent technology to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the aboveteaching. The embodiments were chosen and described in order to bestexplain the principles of the present technology and its practicalapplication, to thereby enable others skilled in the art to best utilizethe present technology and various embodiments with variousmodifications as are suited to the particular use contemplated. It isunderstood that various omissions and substitutions of equivalents arecontemplated as circumstance may suggest or render expedient, but suchare intended to cover the application or implementation withoutdeparting from the spirit or scope of the claims of the presenttechnology.

While several possible embodiments of the disclosure have been describedabove and illustrated in some cases, it should be interpreted andunderstood as to have been presented only by way of illustration andexample, but not by limitation. Thus, the breadth and scope of apreferred embodiment should not be limited by any of the above-describedexemplary embodiments.

What is claimed is:
 1. A flame retardant optical fiber cable comprising:a plurality of bundle binders lying substantially along a longitudinalaxis of the flame retardant optical fiber cable, wherein the pluralityof bundle binders comprising a plurality of optical fibers; a firstlayer surrounding the plurality of bundle binders, wherein the firstlayer is a loose tube, wherein the first layer is substantially made ofsteel; a second layer surrounding the first layer; a third layersurrounding the second layer; a fourth layer surrounding the thirdlayer, wherein the fourth layer is a peripheral strength member; a fifthlayer surrounding the fourth layer, wherein the fifth layer is a firstjacket layer; a sixth layer surrounding the fifth layer; a seventh layersurrounding the sixth layer, wherein the seventh layer is an armoringlayer; and an eighth layer surrounding the seventh layer, wherein theeighth layer is a second jacket layer, wherein the flame retardantoptical fiber cable withstands a temperature of at least 930 degreeCelsius.
 2. The flame retardant optical fiber cable as claimed in claim1, wherein the second layer is substantially made of a mica tape,wherein the third layer is substantially made of water swellable yarns,wherein the fourth layer is substantially made of glass roving yarns,wherein the fifth layer is substantially made of low smoke zero halogenmaterial, wherein the sixth layer is substantially made of a mica tape,wherein the seventh layer is substantially made of a corrugated ECCStape, wherein the eighth layer is substantially made of low smoke zerohalogen material.
 3. The flame retardant optical fiber cable as claimedin claim 1 further comprising a plurality of ripcords, wherein theplurality of ripcords comprises a first plurality of ripcords and asecond plurality of ripcords, wherein the first plurality of ripcords ispositioned at an interface of the fourth layer and the fifth layer,wherein the second plurality of ripcords is positioned at an interfaceof the sixth layer and the seventh layer.
 4. The flame retardant opticalfiber cable as claimed in claim 1, wherein the flame retardant opticalfiber cable is stressed for a first time period of about 60 minutes withthe facilitation of flame at 930 degree Celsius with mechanical shocks,wherein the flame retardant optical fiber cable is further stressed fora second time period of about 60 minutes with the facilitation of waterspray on the cable.
 5. The flame retardant optical fiber cable asclaimed in claim 1, wherein the first layer has a first diameter in arange of about 1.6±0.3 millimeters, a second diameter in a range ofabout 2.0±0.3 millimeters, a thickness in a range of about 2.00±0.05millimeters, wherein the second layer has a thickness in a range ofabout 0.13±0.02 millimeter, wherein the fifth layer has a first diameterin a range of about 7.0±0.3 millimeters, a second diameter in a range ofabout 10.0±0.3 millimeters and a thickness in a range of about 1.5±0.3millimeters, wherein the sixth layer has a thickness in a range of about0.13±0.02 millimeter, wherein the seventh layer has a thickness in arange of about 0.145±0.025 millimeter when the flame retardant opticalfiber cable has one of 12 optical fibers, 24 optical fiber and 48optical fibers.
 6. The flame retardant optical fiber cable as claimed inclaim 1, wherein the eighth layer has a first diameter in a range ofabout 12.0±1.0 millimeters, a second diameter in a range of about16.0±1.0 millimeters and a thickness in a range of about 2.0±0.3millimeters when the flame retardant optical fiber cable has one of 12optical fibers and 24 optical fibers, wherein the eighth layer has afirst diameter in a range of about 13.0±1.0 millimeters, a seconddiameter in a range of about 17.0±1.0 millimeters and a thickness in arange of about 2.0±0.3 millimeters when the flame retardant opticalfiber cable comprises 48 fibers.
 7. The flame retardant optical fibercable as claimed in claim 1, wherein the flame retardant optical fibercable has a diameter in a range of about 16.0±1.0 millimeters and aweight of about 300±10% kilograms/kilometer when the flame retardantoptical fiber cable has one of 12 optical fibers and 24 optical fibers,wherein the flame retardant optical fiber cable has a diameter in arange of about 17.0±1.0 millimeter and a weight of about 345±10%kilograms/kilometer when the flame retardant optical fiber cablecomprises 48 optical fibers.
 8. The flame retardant optical fiber cableas claimed in claim 1, wherein the flame retardant optical fiber cablehas impact strength of about 25 Newton meter, wherein the flameretardant optical fiber cable has a crush resistance of about 400 Newtonper 10 centimeter, wherein the flame retardant optical fiber cable has amaximum tensile strength of about 3000 Newton, wherein the flameretardant optical fiber cable has a kink radius of about 10 D, wherein Dis the cable diameter of the flame retardant optical fiber cable.
 9. Aflame retardant optical fiber cable comprising: a plurality of bundlebinders lying substantially along a longitudinal axis of the flameretardant optical fiber cable, wherein the plurality of bundle binderscomprising a plurality of optical fibers; a first layer surrounding theplurality of bundle binders, wherein the first layer is a loose tube,wherein the first layer is substantially made of steel; a second layersurrounding the first layer; a third layer surrounding the second layer;a fourth layer surrounding the third layer, wherein the fourth layer isa peripheral strength member; a fifth layer surrounding the fourthlayer, wherein the fifth layer is a first jacket layer; a sixth layersurrounding the fifth layer; a seventh layer surrounding the sixthlayer, wherein the seventh layer is an armoring layer; an eighth layersurrounding the seventh layer, wherein the eighth layer is a secondjacket layer; and a plurality of ripcords, wherein the plurality ofripcords comprises a first plurality of ripcords and a second pluralityof ripcords, wherein the first plurality of ripcords is positioned at aninterface of the fourth layer and the fifth layer, wherein the secondplurality of ripcords is positioned at an interface of the sixth layerand the seventh layer, wherein the flame retardant optical fiber cablewithstands a temperature of at least 930 degree Celsius, and wherein theflame retardant optical fiber cable is stressed for a first time periodof about 60 minutes with the facilitation of flame at 930 degree Celsiuswith mechanical shocks, wherein the flame retardant optical fiber cableis further stressed for a second time period of about 60 minutes withthe facilitation of water spray on the cable.
 10. The flame retardantoptical fiber cable as claimed in claim 9, wherein the second layer issubstantially made of a mica tape, wherein the third layer issubstantially made of water swellable yarns, wherein the fourth layer issubstantially made of glass roving yarns, wherein the fifth layer issubstantially made of low smoke zero halogen material, wherein the sixthlayer is substantially made of a mica tape, wherein the seventh layer issubstantially made of a corrugated ECCS tape, wherein the eighth layeris substantially made of low smoke zero halogen material.
 11. The flameretardant optical fiber cable as claimed in claim 9, wherein the firstlayer has a first diameter in a range of about 1.6±0.3 millimeters, asecond diameter in a range of about 2.0±0.3 millimeters, a thickness ina range of about 2.00±0.05 millimeters, wherein the second layer has athickness in a range of about 0.13±0.02 millimeter, wherein the fifthlayer has a first diameter in a range of about 7.0±0.3 millimeters, asecond diameter in a range of about 10.0±0.3 millimeters and a thicknessin a range of about 1.5±0.3 millimeters, wherein the sixth layer has athickness in a range of about 0.13±0.02 millimeter, wherein the seventhlayer has a thickness in a range of about 0.145±0.025 millimeter whenthe flame retardant optical fiber cable has one of 12 optical fibers, 24optical fiber and 48 optical fibers.
 12. The flame retardant opticalfiber cable as claimed in claim 9, wherein the eighth layer has a firstdiameter in a range of about 12.0±1.0 millimeters, a second diameter ina range of about 16.0±1.0 millimeters and a thickness in a range ofabout 2.0±0.3 millimeters when the flame retardant optical fiber cablehas one of 12 optical fibers and 24 optical fibers, wherein the eighthlayer has a first diameter in a range of about 13.0±1.0 millimeters, asecond diameter in a range of about 17.0±1.0 millimeters and a thicknessin a range of about 2.0±0.3 millimeters when the flame retardant opticalfiber cable comprises 48 fibers.
 13. The flame retardant optical fibercable as claimed in claim 9, wherein the flame retardant optical fibercable has a diameter in a range of about 16.0±1.0 millimeters and aweight of about 300±10% kilograms/kilometer when the flame retardantoptical fiber cable has one of 12 optical fibers and 24 optical fibers,wherein the flame retardant optical fiber cable has a diameter in arange of about 17.0±1.0 millimeter and a weight of about 345±10%kilograms/kilometer when the flame retardant optical fiber cablecomprises 48 optical fibers.
 14. The flame retardant optical fiber cableas claimed in claim 9, wherein the flame retardant optical fiber cablehas impact strength of about 25 Newton meter, wherein the flameretardant optical fiber cable has a crush resistance of about 400 Newtonper 10 centimeter, wherein the flame retardant optical fiber cable has amaximum tensile strength of about 3000 Newton, wherein the flameretardant optical fiber cable has a kink radius of about 10 D, wherein Dis the cable diameter of the optical fiber cable.
 15. A flame retardantoptical fiber cable comprising: a plurality of bundle binders lyingsubstantially along a longitudinal axis of the flame retardant opticalfiber cable, wherein the plurality of bundle binders comprising aplurality of optical fibers; a first layer surrounding the plurality ofbundle binders, wherein the first layer is a loose tube, wherein thefirst layer is substantially made of steel; a second layer surroundingthe first layer, wherein the second layer is substantially made of amica tape; a third layer surrounding the second layer, wherein the thirdlayer is substantially made of water swellable yarns; a fourth layersurrounding the third layer, wherein the fourth layer is a peripheralstrength member, wherein the fourth layer is substantially made of glassroving yarns; a fifth layer surrounding the fourth layer, wherein thefifth layer is a first jacket layer, wherein the fifth layer issubstantially made of low smoke zero halogen material; a sixth layersurrounding the fifth layer, wherein the sixth layer is substantiallymade of a mica tape,; a seventh layer surrounding the sixth layer,wherein the seventh layer is an armoring layer, wherein the seventhlayer is substantially made of a corrugated ECCS tape; an eighth layersurrounding the seventh layer, wherein the eighth layer is a secondjacket layer, wherein the eighth layer is substantially made of lowsmoke zero halogen material; and a plurality of ripcords, wherein theplurality of ripcords comprises a first plurality of ripcords and asecond plurality of ripcords, wherein the first plurality of ripcords ispositioned at an interface of the fourth layer and the fifth layer,wherein the second plurality of ripcords is positioned at an interfaceof the sixth layer and the seventh layer, wherein the flame retardantoptical fiber cable withstands a temperature of at least 930 degreeCelsius, and wherein the flame retardant optical fiber cable is stressedfor a first time period of about 60 minutes with the facilitation offlame at 930 degree Celsius with mechanical shocks, wherein the flameretardant optical fiber cable is further stressed for a second timeperiod of about 60 minutes with the facilitation of water spray on thecable.
 16. The flame retardant optical fiber cable as claimed in claim15, wherein the first layer has a first diameter in a range of about1.6±0.3 millimeters, a second diameter in a range of about 2.0±0.3millimeters, a thickness in a range of about 2.00±0.05 millimeters,wherein the second layer has a thickness in a range of about 0.13±0.02millimeter, wherein the fifth layer has a first diameter in a range ofabout 7.0±0.3 millimeters, a second diameter in a range of about10.0±0.3 millimeters and a thickness in a range of about 1.5±0.3millimeters, wherein the sixth layer has a thickness in a range of about0.13±0.02 millimeter, wherein the seventh layer has a thickness in arange of about 0.145±0.025 millimeter when the flame retardant opticalfiber cable has one of 12 optical fibers, 24 optical fiber and 48optical fibers.
 17. The flame retardant optical fiber cable as claimedin claim 15, wherein the eighth layer has a first diameter in a range ofabout 12.0±1.0 millimeters, a second diameter in a range of about16.0±1.0 millimeters and a thickness in a range of about 2.0±0.3millimeters when the flame retardant optical fiber cable has one of 12optical fibers and 24 optical fibers, wherein the eighth layer has afirst diameter in a range of about 13.0±1.0 millimeters, a seconddiameter in a range of about 17.0±1.0 millimeters and a thickness in arange of about 2.0±0.3 millimeters when the flame retardant opticalfiber cable comprises 48 fibers.
 18. The flame retardant optical fibercable as claimed in claim 15, wherein the flame retardant optical fibercable has a diameter in a range of about 16.0±1.0 millimeters and aweight of about 300±10% kilograms/kilometer when the flame retardantoptical fiber cable has one of 12 optical fibers and 24 optical fibers,wherein the flame retardant optical fiber cable has a diameter in arange of about 17.0±1.0 millimeter and a weight of about 345±10%kilograms/kilometer when the optical fiber cable comprises 48 opticalfibers.
 19. The flame retardant optical fiber cable as claimed in claim15, wherein the flame retardant optical fiber cable has an impactstrength of about 25 Newton meter, wherein the flame retardant opticalfiber cable has a crush resistance of about 400 Newton per 10centimeter, wherein the flame retardant optical fiber cable has amaximum tensile strength of about 3000 Newton, wherein the flameretardant optical fiber cable has a kink radius of about 10 D, wherein Dis the cable diameter of the flame retardant optical fiber cable.